Carbon - Different Forms NDA Questions

NDA Chemistry

Carbon - Different Forms MCQ Questions


13.
Because of the presence of a lone pair on carbon, CO molecule acts as a donor and reacts with certain metals when heated to form
A.
Coke
B.
Non-metal compound
C.
Metal carbonyls
D.
Carbon dioxide
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ANSWER :
C. Metal carbonyls
14.
Gaseous Carbon dioxide is extensively used to carbonate
A.
Water
B.
Gravy
C.
Juice
D.
Soft drinks
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ANSWER :
D. Soft drinks
15.
What are the important oxides of carbon?
A.
Carbon monoxide
B.
Carbon dioxide
C.
Both a and b
D.
Carbon tetroxide
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ANSWER :
C. Both a and b
16.
What is the product obtained when ethene is treated with hydrogen gas in the presence of a nickel catalyst?
A.
Ethyne
B.
Ethane
C.
Ethanol
D.
None of these
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ANSWER :
B. Ethane
17.
Direct oxidation of C in limited supply of oxygen or air yields
A.
Carbon monoxide
B.
Carbon dioxide
C.
Both a and b
D.
Carbon tetroxide
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ANSWER :
A. Carbon monoxide
18.
Which of the following are the impure forms of graphite or fullerenes?
A.
Carbon black
B.
Coke
C.
Charcoal
D.
All the above
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ANSWER :
D. All the above